Enabling photon counting clinical x-ray CT

Katsuyuki Taguchi, Somesh Srivastava, Hiroyuki Kudo, William C. Barber

Research output: Chapter in Book/Report/Conference proceedingConference contribution

45 Scopus citations

Abstract

Photon counting x-ray detectors (PCXDs) with energy discrimination capabilities offer various advantages over the current intensity integrating detectors, such as improved accuracy in material decomposition, reduced image noise, reduced radiation dose, etc. The major problem of PCXDs, however, is the limited speed. The required count rate for clinical x-ray CT scanners may be 109 counts-per-second-per-square-millimeters (cps), while the operational count rates (where a count rate loss is less than 5%) of available PCXDs are much lower, e.g., 5 × 105 cps. In this study, we propose to enable PCXD-based clinical CT imaging using these slower-than-desired detectors by a combination of four methods that reduce the count rate requirements and compensate for the effect of pileup.

Original languageEnglish (US)
Title of host publication2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
Pages3581-3585
Number of pages5
DOIs
StatePublished - Dec 1 2009
Event2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009 - Orlando, FL, United States
Duration: Oct 25 2009Oct 31 2009

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Other

Other2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
Country/TerritoryUnited States
CityOrlando, FL
Period10/25/0910/31/09

Keywords

  • Computed tomography
  • Photon counting

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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